From 57ec762adf7121283cd1ce964b190ebfe7adb0ff Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Sat, 17 Oct 2020 01:33:34 +0300
Subject: CommandLine: add MSDN test cases

---
 test/unit_tests/cmd_line.cpp | 81 ++++++++++++++++++++++++++++++++++++++------
 1 file changed, 70 insertions(+), 11 deletions(-)

(limited to 'test/unit_tests')

diff --git a/test/unit_tests/cmd_line.cpp b/test/unit_tests/cmd_line.cpp
index 99646ff..42f4a93 100644
--- a/test/unit_tests/cmd_line.cpp
+++ b/test/unit_tests/cmd_line.cpp
@@ -5,30 +5,89 @@
 
 #include <winapi/cmd_line.hpp>
 
+// clang-format off
+// The order matters for older Boost versions.
 #include <boost/test/unit_test.hpp>
+#include <boost/test/data/test_case.hpp>
+#include <boost/test/data/monomorphic.hpp>
+// clang-format on
 
+#include <ostream>
 #include <string>
+#include <vector>
+
+using namespace winapi;
+
+namespace std {
+
+ostream& operator<<(ostream& os, const vector<string>& xs) {
+    os << "[\n";
+    for (const auto& x : xs) {
+        os << x << '\n';
+    }
+    os << "]";
+    return os;
+}
+
+} // namespace std
+
+BOOST_TEST_SPECIALIZED_COLLECTION_COMPARE(std::vector<std::string>);
+
+namespace {
+
+// MSDN examples
+// https://docs.microsoft.com/en-us/cpp/c-language/parsing-c-command-line-arguments?view=vs-2019
+
+const std::vector<std::string> msdn_string{
+    R"(test.exe "abc" d e)",
+    R"(test.exe a\\\b d"e f"g h)",
+    R"(test.exe a\\\"b c d)",
+    R"(test.exe a\\\\"b c" d e)",
+};
+
+const std::vector<std::vector<std::string>> msdn_argv{
+    {"test.exe", "abc", "d", "e"},
+    {"test.exe", R"(a\\\b)", "de fg", "h"},
+    {"test.exe", R"(a\"b)", "c", "d"},
+    {"test.exe", R"(a\\b c)", "d", "e"},
+};
+
+} // namespace
 
 BOOST_AUTO_TEST_SUITE(cmd_line_tests)
 
 BOOST_AUTO_TEST_CASE(query) {
-    const auto cmd_line = winapi::CommandLine::query();
-    BOOST_TEST(!cmd_line.get_argv0().empty());
-    BOOST_TEST_MESSAGE(cmd_line.get_argv0());
+    const auto cmd_line = CommandLine::query();
+    BOOST_TEST(!cmd_line.get_argv0().empty(), "argv[0]: " << cmd_line.get_argv0());
 }
 
-BOOST_AUTO_TEST_CASE(escape) {
-    wchar_t* argv[] = {
-        L"test.exe",
-        L"arg1 arg2",
-        LR"(path\to\file)",
-        LR"(path\to\dir\)",
-        LR"(weird\\argument)",
+BOOST_AUTO_TEST_CASE(to_string) {
+    const std::vector<std::string> argv{
+        "test.exe",
+        "arg1 arg2",
+        R"(path\to\file)",
+        R"(path\to\dir\)",
+        R"(weird\\argument)",
     };
-    const auto cmd_line = winapi::CommandLine::from_main(5, argv);
+    const CommandLine cmd_line{argv};
     const auto expected =
         R"("test.exe" "arg1 arg2" "path\to\file" "path\to\dir\\" "weird\\argument")";
     BOOST_TEST(cmd_line.to_string() == expected);
 }
 
+BOOST_DATA_TEST_CASE(msdn_parse,
+                     boost::unit_test::data::make(msdn_string) ^ msdn_argv,
+                     input,
+                     expected) {
+    const auto cmd_line = CommandLine::parse(input);
+    const auto actual = cmd_line.get_argv();
+    BOOST_TEST(actual == expected, "actual: " << actual);
+}
+
+BOOST_DATA_TEST_CASE(msdn_to_string, msdn_argv, argv) {
+    const CommandLine cmd_line{argv};
+    const auto actual = CommandLine::parse(cmd_line.to_string()).get_argv();
+    BOOST_TEST(actual == argv, "actual: " << actual);
+}
+
 BOOST_AUTO_TEST_SUITE_END()
-- 
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